chore: use file-scoped namespace

src/Shared/Microsoft.Windows.Shell/Standard/SHARDAPPIDINFO.cs

@@ -2,16 +2,15 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
 
-namespace Standard
-{
-    [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
-    [StructLayout(LayoutKind.Sequential, Pack = 4)]
-    internal class SHARDAPPIDINFO
-    {
-        [MarshalAs(UnmanagedType.Interface)]
-        private object psi;
+namespace Standard;
 
-        [MarshalAs(UnmanagedType.LPWStr)]
-        private string pszAppID;
-    }
-}
+[SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
+[StructLayout(LayoutKind.Sequential, Pack = 4)]
+internal class SHARDAPPIDINFO
+{
+    [MarshalAs(UnmanagedType.Interface)]
+    private object psi;
+
+    [MarshalAs(UnmanagedType.LPWStr)]
+    private string pszAppID;
+}